ScienceDaily: Top Science News |
- Dating between modern humans and Neandertals
- BPA's real threat may be after it has metabolized: Chemical found in many plastics linked to multiple health threats
- Duck-bill dinosaurs had plant-pulverizing teeth more advanced than horses
- Star discovered racing around black hole at center of our galaxy: Crucial to revealing fabric of space and time
- Insects a prime driver in plant evolution and diversity
- More certainty on uncertainty's quantum mechanical role
- Universal map of vision in the human brain
- The smell of mom: Scientists find elusive trigger of first suckling in mice
- Bacterium in a laser trap: Light tube can grab and scan even tiniest of unicellular organisms
- Anthropologist finds evidence of hominin meat eating 1.5 million years ago: Eating meat may have 'made us human'
- Unforgeable quantum credit cards in sight
| Dating between modern humans and Neandertals Posted: 04 Oct 2012 05:10 PM PDT To discover why Neandertals are most closely related to people outside Africa, scientists have estimated the date when Neandertals and modern Europeans last shared ancestors. The research provides a historical context for the interbreeding. It suggests that it occurred when modern humans carrying Upper Paleolithic technologies encountered Neandertals as they expanded out of Africa.  |
| Posted: 04 Oct 2012 05:09 PM PDT Bisphenol A (BPA) is a synthetic chemical widely used in the making of plastic products ranging from bottles and food can linings to toys and water supply lines. When these plastics degrade, BPA is released into the environment and routinely ingested. New research suggests it's the metabolic changes that take place once BPA is broken down inside the body that pose the greater health threat.  |
| Duck-bill dinosaurs had plant-pulverizing teeth more advanced than horses Posted: 04 Oct 2012 11:17 AM PDT A team of paleontologists and engineers has found that duck-billed dinosaurs had an amazing capacity to chew tough and abrasive plants with grinding teeth more complex than those of cows, horses, and other well-known modern grazers. Their study is the first to recover material properties from fossilized teeth.  |
| Posted: 04 Oct 2012 11:17 AM PDT Astronomers report the discovery of a remarkable star that orbits the enormous black hole at the center of our Milky Way galaxy in a blistering 11-and-a-half years, the shortest known orbit of any star near this black hole.  |
| Insects a prime driver in plant evolution and diversity Posted: 04 Oct 2012 11:17 AM PDT Take a good look around on your next nature hike. Not only are you experiencing the wonders of the outdoors -- you're probably also witnessing evolution in action.  |
| More certainty on uncertainty's quantum mechanical role Posted: 04 Oct 2012 09:16 AM PDT Researchers are presenting findings that observation need not disturb systems as much as once thought, severing the act of measurement from the Heisenberg Uncertainty Principle.  |
| Universal map of vision in the human brain Posted: 04 Oct 2012 09:15 AM PDT Nearly 100 years after a British neurologist first mapped the blind spots caused by missile wounds to the brains of soldiers, researchers have perfected his map using modern-day technology. Their results create a map of vision in the brain based upon an individual's brain structure, even for people who cannot see.  |
| The smell of mom: Scientists find elusive trigger of first suckling in mice Posted: 04 Oct 2012 09:15 AM PDT Biologists have solved the long-standing scientific mystery of how mice first know to nurse or suckle. This basic mammalian instinct, which could be a key to understanding instinctive behavior more generally, was thought to be triggered by a specific odor (pheromone) that all mouse mothers emit. But the trigger in mice turns out to be a more complicated blend of nature and nurture: a signature mix of odors, unique for each mother, which her offspring learn.  |
| Bacterium in a laser trap: Light tube can grab and scan even tiniest of unicellular organisms Posted: 04 Oct 2012 07:40 AM PDT Scientists have constructed an innovative new optical trap that can grab and scan tiny elongated bacteria with the help of a laser. The physicists created a kind of light tube that traps the agile unicellular organisms. Optical tweezers could previously only be used to grab bacteria at one point, not to manipulate their orientation. Researchers have now succeeded in using a quickly moving, focused laser beam to exert an equally distributed force over the entire bacterium, which constantly changes its complex form. At the same time, they were able to record the movements of the trapped bacterium in high-speed three-dimensional images by measuring miniscule deflections of the light particles.  |
| Posted: 04 Oct 2012 06:35 AM PDT A skull fragment unearthed in Tanzania shows our ancient ancestors ate meat at least 1.5 million years ago, shedding new light on human evolution.  |
| Unforgeable quantum credit cards in sight Posted: 04 Oct 2012 06:30 AM PDT Physicists have developed a scheme for noise tolerant and yet safely encrypted quantum tokens.  |
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